Improvement in pumps



UNITED STATES PATENT OEEicE.

ASSARIA REWERICK, OF SAN FRANCISCO, CALIFORNIA.

IMPROVEMENT IN PUMPS.

Specification forming part of Letters Patent N0. 53, 185, dated March13, 1866.

To all `whom it may concern:

Be it known that I, Assnnm REwEE1cK,of the city and county of SanFrancisco, State of California, have invented a certain new and usefulImprovement in Double-Acting Pumps, called Rewericlis Double-Acting Pumpand I do hereby declare that the following specication is a full, clear,and exact description ot' the same.

To enable others skilled in the art to make and use my invention, I willproceed to describe its construction and the manner ot' operating thesaine, referring' to the drawings, in which the same letters indicatelike parts in each of the figures- Figure l being a side elevation. Fig.2 is a sectional elevation.

The nature of my invention consists in pro` viding a double cylindricalbarrel, the one t ting closely and operating inside the other, the innerbarrel or cylinder having an inductionvalve at its base with twobranches joined together above it, one of which extends upward through aslot in across-bar placed across the main barrel, through which it worksin connection with the piston or bucket valve by means of jointed arms.

In the accompanying drawings, Fig. l, A represents a pump-barrel, (shownin elevation,) upon the top of which is bolted the standard D, whichacts as a fulcrum for the handle B. To this handle are attached theconductingrods C C', placed on opposite sides of the support-standard D.

E E is a cross-bar, through which the pistonrods slide, and which servesto keep them in place. Fig. 2 shows clearly the parts.

To the jointed arms C and C are attached the piston-rods F and F', whichmove the respective pistons H and M.

C is the conducting-rod which conveys the motion to the lower piston. Cis the conducting-rod which gives motion to the upper piston.

The piston M consists ot' a cylinder fitting water-tight to thepump-barrel A, and is ot' sufficient length to allow another piston towork inside ot it. At the bottom of the cylinder is au opening, V,'abovewhich is placed the puppet-valve O, opening upward. This valve issupported and steadied by the spindle P, movingin the supports It and R.Inside the cylinder M is a piston, H H, (also furnished with a valve, I,and spindle K,l opening upward and moving in the cross-supports L L.

The operation of my pump is as follows, to wit.: When the leveror'handle is depressed the upper piston is pressed down and the lower orbarrel piston is at the same time elevated and its valves shut, whichforces the water through the upper valve at the same time; and when thehandle is raised the upper pistou rises with its valve closed, and thewater in its ascension is forced through the discharging surface orpipe. At the same time the lower piston descends, by which action itsvalve is opened.

Having thus described my double-acting pump, I will now state what Iclaim and desire to secure by Letters Patent:

The cylinders A and M and pistons H and N, with their valves. whenarranged and operated substantially as described.

h. AssAEIA 1 EEwEEicK. [La] mark.

Witnesses C. W. M. SMITH, IsAIAH WESTON.

